Lectotype Of Light Rail Vehicles And Research On Dynamic Performance

With the progress of science and technology, light rail vehicles, one of the best ways of solving city traffic, are widely accepted by people, and are studied systematically. Light rail vehicles have the characteristic of great capacity, low-noise, comfortable ride, no environment pollution, energy saving, economy etc. As carrying tools, light rail vehicles are vital to light rail traffic. Many countries have researched all kinds of light rail vehicles, which incarnate the variety of society requirement, and incarnate the complexity of light rail vehicles. Therefore, it is necessary for us to utilize foreign experiences to develop our own light rail vehicles.Firstly, in this paper, the development and application status of light rail vehicles in the world are expatiated, and the development actuality and application foreground of independent wheel in light rail vehicles are introduced. Secondly, the lectotype of 70% light rail vehicles is analyzed; the advantage and disadvantage of 70% and 100% light rail vehicles are compared. Then the low floor bogie that is suitable to the situation of china is voted in. The dynamic model of 70% low floor light rail vehicles is established by the mutil-body dynamics analysis software SIMPACK, and the ways of dealing with the key parts of the vehicle system are given during modeling.On the basis of original parameters, the suspension parameters of the trailer car have been optimized by using the simulation model. Optimum parameters are picked up which will ensure the better comprehensive performance of trailer including lateral stability, ride comfort and curving performance.At last, in this paper, the dynamic performance of light rail vehicles are analyzed. The dynamic performance of independent wheels, which including the abilities to restoring on tangent tracks and curing performances, are analyzed. In the analysis of restoring ontangent tracks, different conicity of profile, which influences restoring of independent wheel, are analyzed. In the analysis of curving performance, the difference of dynamic performance of independent wheel and wheelsets are analyzed. Finally, the dynamic performance of light rail vehicles, such as linear stability, non-linear stability, curve negotiation and ride performance etc, are analyzed.